header,section,footer,aside,nav,article,figure{
    display: block;
}


.container{
    display: flex;
    flex-wrap: wrap; /* 自动换行 */
    gap: 10px; /* 元素间距 */
}

.svg-cir{
    fill:lime;
    stroke:purple;
    stroke-width:5;
    fill-rule:evenodd;
}

.div-normal{
    width: 300px;
    height: 300px;
    border: 1px solid red; /* 边框 */
    color: black;
    display: inline-block;
}

.divdrop{
    width: 300px;
    height: 100px;
    border: 1px solid red; /* 边框 */
}